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Intel
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Express 140T

Intel Express 140T Quick Start And User Manual

Intel® Expr ess 140T Standalone Hub
Quick Start and User Guide
Intel Corporation assumes no responsibility for errors or omissions in this manual. Nor does Intel make any commitment to update the information contained herein.
* Other product and corporate names may be trademarks of other companies and are used only for explanation and
to the owners’ benefit, without intent to infringe.
First Edition September 1998 722791-001
Year 2000 Capable
An Intel product, when used in accordance with its associated documentation, is “Year 2000 Capable” when, upon installation, it accurately stores, displays, processes, provides, and/or receives date data from, into, and between the twentieth and twenty-first centuries, including leap year calculations, provided that all other technology used in combination with said product properly exchanges date data with it.
1
Contents
Quick Start 2 User Guide 3
Overview ..............................................................................................3
Understanding 140T Hubs....................................................................4
Port LEDs ......................................................................................4
Hub LEDs......................................................................................5
Connecting to Devices..........................................................................6
Connection Guidelines ..................................................................6
Bridging Segments ........................................................................6
Daisy-chaining Hubs ..................................................................... 7
Cabling Devices....................................................................................8
Media Requirements .....................................................................8
Straight-through vs. Crossover Cables..........................................8
Testing Cables ............................................................................... 8
Troubleshooting....................................................................................10
Regulatory Information ........................................................................11
W arnings...............................................................................................12
Limited Hardware Warranty .................................................................15
Intel Customer Support................................................Inside Back Cover
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9101112
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1 5 10 30 40 50+
Traff
10Mbps
Power
10Mbps
Port
Activity
Port
Speed
Intel® Express 140T Standalone Hub
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13
Install the Hub
Connect the Devices
Check the Connections
• Remove the hub and parts from the box.
• Attach the enclosed brackets if you plan to mount the hub in a rack.
• Install the Intel® Express 140T Standalone Hub in a rack or on a shelf.
• Plug in the power cord.
• Check the port LEDs (located to the left of the ports) to confirm the link status. A solid LED indicates a valid link. A blinking LED indicates port activity.
• The bottom two rows indicate port speed.
• All ports automatically detect the speed of the device connected to them.
• Connect PCs and print servers to the hub with straight-through cables.
• Use a crossover cable to connect a hub to another hub or switch.
• Use a straight-through cable to connect to another hub or switch when using the daisy-chain port.
• Use only CAT 5 UTP to connect 100Mbps devices. To connect 10Mbps devices, use CAT 3, 4, or 5 UTP.
Top Row – Port Activity
Solid Green = Link Blinking = Activity Orange = Autodisabled
Bottom Row – Port Speed
Solid Green = 100Mbps Off = 10Mbps
i
R
100Mbps
Daisy-chain
MDI
1
510
30
40
50+
1
510
30
40
50+
10Mbps
P
ow
er
10Mbps
100Mbps
Collisions
or
Class
I
I
P
or
t
Activity
P
or
t
Speed
Solid g
reen = Link
Blinking g
reen = Activity
Or
ange = A
utodisabled
Solid Green = 100Mbps Off = 10Mbps
Intel
®
Express 140T
Standalone Hub
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Traffic %
Rack: Use the four small screws to attach the brackets to the hub.
Shelf: Peel off the protective backing and attach the rubber feet to the hub.
3
1
2
10/100
10/100
10/100
10/100
10/100
Hub Hub or Switch
Hub Print Server
Hub PC/Server
straight-through
From To
Quick Start
Hub Hub or Switch
straight-through
using the hub’s daisy-chain port
crossover
not using the hub’s daisy-chain port
3
User Guide - Overview
Features
This guide covers both the 16- and 24-port versions of the Express 140T Standalone Hub.
i
R
100Mbps
Daisy-chain
MDI
1 5 10 30 40 50+1 5 10 30 40 50+
Traffic %
10Mbps
Power
10Mbps 100Mbps
Collisions
or
Port
Activity
Port
Speed
Intel® Express 140T Standalone Hub
Solid green = Link Blinking green = Activity Orange = Autodisabled
Solid Green = 100Mbps Off = 10Mbps
Class
II
9101112
5678
13 14 15 16
1234
9101112
9101112
12345678
13 14 15 16
12345678
13 14 15 16
i
R
100Mbps
Daisy-chain
MDI
1 5 10 30 40 50+1 5 10 30 40 50+
Traffic %
10Mbps
Power
10Mbps 100Mbps
Collisions
or
Class
II
Port
Activity
Port
Speed
Solid green = Link Blinking green = Activity Orange = Autodisabled
Solid Green = 100Mbps Off = 10Mbps
Intel® Express 140T Standalone Hub
56781234
17 18
19
2013 14 15 16
123456789101112 13 14 15 16 17 18 19 20 21 22 23 24
123456789101112 13 14 15 16 17 18 19 20 21 22 23 24
9101112
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AC LINE 100-240 VAC 50-60 Hz
1.5A MAX.
50W
• Autosenses speed—10Mbps or 100Mbps
per port.
• Automatically bridges 10Mbps and 100Mbps segments.
• Can be daisy-chained with another 140T hub (or any ClassII hub) to expand port density (maximum of two hubs).
Ports
Utilization
LEDs
Port LEDs
16-port 140T Hub (Product Code EE140TX16)
24-port 140T Hub (Product Code EE140TX24)
Daisy-chain port
Fan AC
Power
Plug
4
Understanding 140T Hubs
Port LEDs
On the 140T, the port LEDs are located on a common panel with the hub LEDs. These LEDs indicate port status, individual port speed, and port activity .
Port
Activity
Port
Speed
Solid green = Link Blinking green = Activity Orange = Autodisabled
Solid Green = 100Mbps Off = 10Mbps
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9101112
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LED Status Meaning
Port Activity Solid green Device linked.
Blinking green Receiving activity on that port. Blinking orange Port auto-disabled (partitioned). See below . Off No link detected.
Port Speed Solid green Device connected at 100Mbps
Off Device connected at 10Mbps.
Partitioned ports
A port is automatically disabled (partitioned) by the hub when an invalid condition occurs, such as too many consecutive collisions.
Once the hub is able to transmit data to the port collision free, the hub automatically re-enables (unpartitions) the port. Clients are usually not affected by a partitioned port because the port is often unpartitioned very quickly .
Usually, a partitioned port indicates an overloaded network or a malfunctioning device (like an adapter card) on the network. To alleviate an overloaded network, divide the network into smaller segments so that fewer devices share the same fixed amount of bandwidth.
Top rows: Port Activity
Bottom rows: Port Speed
5
Hub LEDs
The 140T hub LEDs are located above and below the port LEDs. These LEDs indicate the condition of the power supply, collisions per segment, and the amount of traffic per segment.
i
R
100Mbps
1 5 10 30 40 50+1 5 10 30 40 50+
Traffic %
10Mbps
Power
10Mbps 100Mbps
Collisions
Port
Activity
Port
Speed
Intel® Express 140T Standalone Hub
Solid green = Link Blinking green = Activity Orange = Autodisabled
Solid Green = 100Mbps Off = 10Mbps
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LED Status Meaning
Power On Hub is receiving power.
Off Hub is not receiving power.
Collisions 10Mbps Blinking Collisions detected on 10Mbps segment. Collisions 100Mbps Blinking Collisions detected on 100Mbps segment.
T raffic% (1-50+) On Gives an approximation of the traffic in
the 10Mbps or 100Mbps segments.
Off No network traffic on segment.
Segment Traffic
The traffic bar graphs (located below the port LEDs) provide a quick reference on the current traffic load relative to the total available 10Mbps or 100Mbps network bandwidth. The graphs display a measure of the percentage of bandwidth used on the respective network segment. Typically, a segment showing more than 30% utilization indicates an overloaded network.
The traffic percentage is determined by counting all data packets, whether the packets are valid or not.
6
Connection Guidelines
General
• The 140T is capable of autonegotiating port speed and can operate at 10Mbps or 100Mbps per port. The hub matches the highest possible speed of an attached device.
• The ports on the 140T hub are half-duplex. The hub cannot connect to a device at full-duplex.
• To prevent a loop in the network, do not connect the 140T to 10Mbps and 100Mbps segments simultaneously if the 10Mbps and 100Mbps segments are bridged externally (through a switch).
Cabling
• Use Category 5 unshielded twisted-pair (CAT 5 UTP) cable when connecting 100Mbps devices to the hub.
• Use Category 3, 4, or 5 unshielded twisted-pair (CAT 3, 4, 5 UTP) cable when connecting 10Mbps devices to the hub.
• Limit the cable length between devices to 100 meters.
• Use crossover cables or the daisy-chain port to connect to a hub or switch.
• Use a straight-through cable to connect the hub to a server or workstation. For more information on cabling, see pages 8-9.
Bridging Segments
A bridge allows two segments to communicate with each other. Typically, a bridge connects segments operating at different speeds. The 140T contains an internal bridge that automatically allows devices operating at 10Mbps to communicate with devices operating at 100Mbps.
i
R
100Mbps
Daisy-chain
MDI
1 5 10 30 40 50+1 5 10 30 40 50+
Traffic %
10Mbps
Power
10Mbps 100Mbps
Collisions
or
Port
Activity
Port
Speed
Intel® Express 140T Standalone Hub
Solid green = Link Blinking green = Activity Orange = Autodisabled
Solid Green = 100Mbps Off = 10Mbps
Class
II
9101112
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13 14 15 16
1234
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13 14 15 16
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10
Connecting to Devices
10Mbps Hub
Server
Shared Printer
10Mbps Clients
10 and 100Mbps Clients
10Mbps
100Mbps
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